Get Smart Opt-out Email Templates here. Email remains one of the most effective ways to communicate with audiences at every stage of the customer journey.
In fact, according to a 2025 article, 70% of businesses prefer to communicate with customers via email.
However, there is a growing challenge: the sheer volume of emails flooding inboxes every day. For many recipients, an opt-out email can feel like a welcome relief—especially when a message has little immediate relevance.
But what happens to all those unsubscribes? Do they simply become emails lost to time? They don’t have to. When handled correctly, unsubscribes can actually be transformed into valuable marketing insights and future opportunities.
CampaignMonitor.com demonstrates how opt-out email templates can be used strategically to your advantage.
What Is an Opt-out Email?
Email opt-out is a fundamental part of any email marketing strategy. It allows individuals to remove themselves from a mailing list, ensuring they no longer receive communications from a company once they have unsubscribed.
By opting out, individuals stop receiving unwanted emails, while senders gain a clearer understanding of who is genuinely interested in their content. This helps protect organisations from potential backlash that could damage brand reputation, while also fostering a more engaged and satisfied audience.
Opt-out emails also help keep mailing lists accurate and up to date, enabling marketers to focus their efforts on people who are genuinely interested in their brand and offerings.
Anyone sending commercial electronic messages (CEMs) must provide an unsubscribe option in accordance with GDPR, CAN-SPAM, and CASL regulations.
Why Use Opt-out Email Templates?
Opt-out email templates provide a structured and professional way to manage unsubscribes. They make it easy for recipients to leave a list if they choose—and in some cases, to reconsider that decision.
They also ensure legal compliance and allow senders to communicate key messages quickly and efficiently, improving the overall subscriber experience and response rates.
Using opt-out templates gives senders greater control and flexibility, enabling personalisation for different audiences.
And what if someone unsubscribes by mistake? Opt-in and re-engagement templates can help manage this. These allow subscribers to reconnect with your brand, rather than being forgotten at the bottom of an unsubscribe page. They help build a more refined and intentional list of prospects and customers who genuinely want to hear from you.
Remember: GDPR requires that all marketing emails to prospects and customers include a clear unsubscribe option.
What to Include in an Opt-out Email
No business wants to lose subscribers. However, retaining contacts who have little or no interest in your brand can ultimately do more harm than good.
Giving people the option to confirm their decision, adjust preferences, or choose how and when they hear from you demonstrates respect for their needs and preferences.
Rather than using a generic opt-out message, a personalised, brand-specific opt-out email creates a more thoughtful and professional experience.
A strong opt-out email template should include:
- A clear subject line, ideally including the words “Opt-out Email”
- Personalisation, such as addressing the recipient by name (e.g. “Hi Joe”)
- Concise, direct copy
- A brief explanation of why you are contacting them and what action is required
- A clear statement that unsubscribing will remove them from the mailing list (and that this may be their final email)
- A prominent CTA, such as “Click here to unsubscribe” or “Update your preferences”
7 Opt-out Email Templates
Opt-out email templates allow you to end subscriber relationships in a professional and respectful way. How you phrase these emails matters—because you never know when the relationship might be worth rekindling in the future.
Below are seven tried-and-tested approaches for ending communication while keeping the door open.
1. The “Hey” Email
The “Hey” email is a simple, friendly way to acknowledge an unsubscribe. Keep the tone light and the message brief. Ask if there is anything you could have done better, and make it clear that you understand their decision if they truly wish to opt out.
2. The “We Will Miss You” Email
For a more personal approach, the “We Will Miss You” email expresses appreciation and regret. Keep the tone sincere, let subscribers know they are valued, and invite them to return if they change their mind.
3. The “What Happened?” Email
If you want insight into why subscribers are leaving, the “What Happened?” email is a good choice. Ask for feedback and explain that their response will help you improve. Make it clear that their concerns will be addressed if they choose to stay.
4. The “Here’s What We Can Fix” Email
This email focuses on solutions rather than explanations. Acknowledge that something may not have worked, reassure subscribers that the issue will be resolved, and ask whether the opt-out was intentional. Always give them full control over whether they wish to continue receiving emails.
5. The “It Wasn’t Intended to Be Personal” Email
This approach is useful when email frequency or content may have caused frustration. Apologise honestly, explain how you will adjust your messaging, and allow recipients to choose the type and frequency of emails they want to receive.
6. The “We’re Sorry!” Email
Taking accountability a step further, the “We’re Sorry!” email explicitly acknowledges that something went wrong. Offer a sincere apology, reassure subscribers that the issue will not happen again, and invite them to remain on your list.
7. The “You’re Not Alone” Email
This final template uses light, dry humour. Acknowledge that others have unsubscribed, make a playful reference to learning from mistakes, and remind recipients that staying subscribed saves them the effort of signing up again later. End with a clear CTA allowing them to confirm their decision or return in the future.